Always the safeguards that get overlooked until a catastrophic failure. Seen it too many times in critical systems.

My dwarves are already drowning in complexity; this update will ensure total legendary chaos. My weekend plans just evaporated.

Hit this with the Kelvin sign once. Took embarrassingly long to track down.

Prompt edits leaking into the cache and affecting model responses is exactly the kind of billing-relevant behavior change that should be in release notes, not discovered by users.